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Three Wheel Polishing Device

Three Wheel Polishing Device

Supports the following standards: AASHTO PP103, AASHTO PP104

The New Humboldt H-3212 Three Wheel Polishing Device is designed to simulate the polishing effects of traffic. Polishing of unbound aggregates per AASHTO PP103 and asphalt mixtures per AASHTO PP104 can be accomplished prior to dynamic friction testing. A staging area facilitates the installation and removal of the molds in the testing area. Electronic actuators lift and lower the wheel carriage onto and off the sample. The VFD allows for a variable rotation of 50-70 rpm from the rugged 1/2hp gear motor. A counter mounted on the electronic controller counts down, stopping the test automatically when the 100,000 rotations are completed.

Features

Realistic Wear Simulation: Simulates traffic wear patterns for reliable performance prediction.
Versatile Application: Conducts polishing of both unbound aggregates and asphalt mixtures. The VFD allows for variable speed control from 50-70 rpm.
User-Friendly: The convenient staging area simplifies mold placement and removal, enabling easy integration with Dynamic Friction
Testers (DFT) for pre- and post-polish friction testing. Electronic actuators handle lifting and lowering the wheel carriage.
Automated Operation: The integrated counter automatically stops the test and water pump after 100,000 rotations, ensuring consistent and repeatable results

Specifications

Voltage:

115/130VAC 60Hz

1/2hp, t:

three-phase gear motor

Variable Frequency Drive:

(VFD) controlled

115V, 60Hz :

Submersible water pump

RPM range:

50-70

Frame:

Rugged 80/20 aluminum slotted frame Clear plexiglass on all 4 sides Front access door with safety cut off switch Locking door hinges prevent door from closing when open Sample/mold adjustment and locking knobs, locks the mold in place preventing it from moving during testing. Electronic actuators lift and lower the wheel base

Wheelbase:

145 ±5 lbs, including steel weights and carriage assembly Three 2.8/2.40-40 tires on heavy-duty swivel casters 11.2" diameter wheel path Connects to electronic actuator for easy lifting and lowering Staging Area The 24" x 22" sample staging allows the user to easily slide the sample in and out of the testing area Stainless steel metal platform Water Basin 5' L x 3.5' W x 6"D with drain valve

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